The nudging effect towards a plant-based diet. A systematic review

The aim of this paper is to assess existing evidence on how nudge (gentle push) interventions can lead people to a plant-based diet. In December 2017 a systematic literature search of articles published with PubMed, Scopus and Web of Science was carried out. The following search strategy was used: plant-based OR vegetarían OR vegan OR semi-vegetarían OR pro-vegetarian AND nudging OR choice architecture OR behavioral change OR behavioral intervention. Due to heterogeneous outcome measures, it was not possible to perform a meta-analysis, so the results are presented in a narrative style. A total of 425 articles were found, of which 8 met the inclusion criteria. Six studies were rated as of good quality. Ali the articles, except one, suggest that the push in general exerts a positive effect on the consumption of foods of vegeta ble origin. The nudge, to provide a predetermined option, seems to be the most promising for the promotion of plant-based consumption in food service operations. Nudging appears to be effective in promoting a plant-based diet by facilitating healthier choices.